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37 #include <sys/queue.h>
39 #include <rte_common.h>
40 #include <rte_memory.h>
41 #include <rte_memzone.h>
42 #include <rte_per_lcore.h>
43 #include <rte_launch.h>
44 #include <rte_atomic.h>
45 #include <rte_rwlock.h>
47 #include <rte_per_lcore.h>
48 #include <rte_lcore.h>
49 #include <rte_cycles.h>
57 * - There is a global rwlock and a table of rwlocks (one per lcore).
59 * - The test function takes all of these locks and launches the
60 * ``test_rwlock_per_core()`` function on each core (except the master).
62 * - The function takes the global write lock, display something,
63 * then releases the global lock.
64 * - Then, it takes the per-lcore write lock, display something, and
65 * releases the per-core lock.
66 * - Finally, a read lock is taken during 100 ms, then released.
68 * - The main function unlocks the per-lcore locks sequentially and
69 * waits between each lock. This triggers the display of a message
70 * for each core, in the correct order.
72 * Then, it tries to take the global write lock and display the last
73 * message. The autotest script checks that the message order is correct.
76 static rte_rwlock_t sl;
77 static rte_rwlock_t sl_tab[RTE_MAX_LCORE];
80 test_rwlock_per_core(__attribute__((unused)) void *arg)
82 rte_rwlock_write_lock(&sl);
83 printf("Global write lock taken on core %u\n", rte_lcore_id());
84 rte_rwlock_write_unlock(&sl);
86 rte_rwlock_write_lock(&sl_tab[rte_lcore_id()]);
87 printf("Hello from core %u !\n", rte_lcore_id());
88 rte_rwlock_write_unlock(&sl_tab[rte_lcore_id()]);
90 rte_rwlock_read_lock(&sl);
91 printf("Global read lock taken on core %u\n", rte_lcore_id());
93 printf("Release global read lock on core %u\n", rte_lcore_id());
94 rte_rwlock_read_unlock(&sl);
104 rte_rwlock_init(&sl);
105 for (i=0; i<RTE_MAX_LCORE; i++)
106 rte_rwlock_init(&sl_tab[i]);
108 rte_rwlock_write_lock(&sl);
110 RTE_LCORE_FOREACH_SLAVE(i) {
111 rte_rwlock_write_lock(&sl_tab[i]);
112 rte_eal_remote_launch(test_rwlock_per_core, NULL, i);
115 rte_rwlock_write_unlock(&sl);
117 RTE_LCORE_FOREACH_SLAVE(i) {
118 rte_rwlock_write_unlock(&sl_tab[i]);
122 rte_rwlock_write_lock(&sl);
123 /* this message should be the last message of test */
124 printf("Global write lock taken on master core %u\n", rte_lcore_id());
125 rte_rwlock_write_unlock(&sl);
127 rte_eal_mp_wait_lcore();
132 REGISTER_TEST_COMMAND(rwlock_autotest, test_rwlock);